Answer:
Captain James Cook
Explanation:
European exploration of the reef began in 1770, when the British explorer Captain James Cook ran his ship aground on it. The work of charting channels and passages through the maze of reefs, begun by Cook, continued during the 19th century.
Answer:
it is actually 75% I Don't know why it is not in the options
C. Traveled by camel so they could escape attacks from wild animals
Hope this helps
They become dimmer at regular intervals